#include<iostream>
int main()
{
	unsigned u = 10, u2 = 42;
	std::cout<< u2 - u << std::endl;
	std::cout<< u - u2 << std::endl;
	
	int i = 10, i2 = 42;
	std::cout<< i2 - i << std::endl;
	std::cout<< i - i2 << std::endl;
	std::cout<< i - u << std::endl;
	std::cout<< u - i << std::endl;
	return 0; 
 } 
